The following histograms are present in Chromium source code but do not
appear in histograms.xml.

Touchpad.NaturalScroll.Forced defined at
chrome/browser/chromeos/preferences.cc line 710
https://cs.chromium.org/chromium/src/chrome/browser/chromeos/preferences.cc?l=710

Touchpad.ThreeFingerClick.Changed defined at
chrome/browser/chromeos/preferences.cc line 509
https://cs.chromium.org/chromium/src/chrome/browser/chromeos/preferences.cc?l=509

Touchpad.ThreeFingerClick.Started defined at
chrome/browser/chromeos/preferences.cc line 511
https://cs.chromium.org/chromium/src/chrome/browser/chromeos/preferences.cc?l=511

File and line information may be out-of-date by the time you read this.

Please remove these histograms from the source code. If they were very
recently added, it may be worth adding them to histograms.xml instead, but
probably not.

This bug was automatically assigned based on git blame information. If you
are not the correct assignee for this bug, please delete the histograms
anyway.